Results 131 to 140 of about 8,525,169 (240)

On the Performance Analysis of Full-Duplex Cell-Free Massive MIMO With User Mobility and Imperfect CSI

IEEE Transactions on Communications
One of the disruptive communication technologies for sixth-generation (6G) wireless networks is cell-free massive multiple-input multiple-output (CF-mMIMO), which is capable to control inter-cell interference in MIMO systems.
Sravani Kurma, Keshav Singh, P. Sharma, Chih-Peng Li, Theodoros A. Tsiftsis   +4 more
semanticscholar   +1 more source

Cell-Free versus Cellular Massive MIMO: What Processing is Needed for Cell-Free to Win? [PDF]

, 2019
Communication by joint signal processing from many distributed access points, called Cell-free Massive MIMO, is a potential beyond-5G network infrastructure.
Bjornson E., Björnson, Emil,, Emil Bjornson, Sanguinetti, Luca,, Luca Sanguinetti, Sanguinetti L.   +5 more
core   +1 more source

Cell-Free Massive MIMO With Multi-Antenna Users and Phase Misalignments: A Novel Partially Coherent Transmission Framework

IEEE Open Journal of the Communications Society
CELL-FREE massive multiple-input multiple-output (MIMO) is a promising technology for next-generation communication systems. This work proposes a novel partially coherent (PC) transmission framework to cope with the challenge of phase misalignment among ...
Unnikrishnan Kunnath Ganesan, Tung Thanh Vu, Erik G. Larsson   +2 more
doaj   +1 more source

Pilot and Data Power Control for Scalable Uplink Cell-Free Massive MIMO [PDF]

IEEE Open Journal of the Communications Society
This paper investigates pilot and data power optimization for cell-free massive MIMO (CF-mMIMO). We propose an iterative algorithm that jointly updates pilot and data power levels to improve channel estimation and ensure reliable data transmission. Pilot
Saeed Mohammadzadeh, Mostafa Rahmani, K. Cumanan, Alister G. Burr, Pei Xiao   +4 more
semanticscholar   +1 more source

Cell-Free Massive MIMO

, 2019
[spa] Cell-free Massive MIMO es un sistema de comunicaciones móviles en que las Base Station (BS), también denominadas como Access Point (AP), se encuentran distribuidas sobre un área de cobertura e interconectadas mediante una red de fronthaul a una ...
Mejía Álvarez, Juliana Stefany
core  

Over-The-Air Federated Learning Over Scalable Cell-free Massive MIMO [PDF]

, 2023
Cell-free massive MIMO is emerging as a promising technology for future wireless communication systems, which is expected to offer uniform coverage and high spectral efficiency compared to classical cellular systems.
Sifaou, Houssem, Li, Geoffrey Ye
core  

Cell-Free Massive MIMO with Channel Aging and Pilot Contamination

, 2020
In this paper, we investigate the impact of channel aging on the performance of cell-free (CF) massive multiple-input multiple-output (MIMO) systems with pilot contamination.
Björnson, Emil,, Emil Bjornson, Zhang, J.,, Jiakang Zheng, Jiayi Zhang, Zheng, Jiakang,, Bo Ai, Ai, Bo,   +7 more
core   +1 more source

WMMSE-Based Processing in Cell-Free Massive MIMO Systems

IEEE Wireless Communications Letters
In this letter, we address the weighted sum-rate maximization problem in a cell-free massive multi-input multi-output (CF-mMIMO) system, subject to constraints on the minimum individual quality of service (QoS), maximum power consumption at each access ...
Jiafei Fu, Z. Mobini, H. Ngo, Pengcheng Zhu, M. Matthaiou   +4 more
semanticscholar   +1 more source

Cell Free Massive MIMO with Limited Capacity Fronthaul

, 2019
Massive MIMO has shown to be a promising candidate for the next generation of mobile communications 5G. Cell free massive MIMO is an implementation in which antennas are distributed throughout the coverage area and the whole area is considered as a ...
Ghanbari, Mohammad, Abbasfar, Aliazam, Boroujerdi, Mahdi N   +2 more
core   +1 more source

A Left-Null-Space-Based Massive Access Method for Cell-Free Massive MIMO IoT Systems. [PDF]

Sensors (Basel), 2023
Wang Y, Wang Y, Hu D.
europepmc   +1 more source